Key Reset - Kenwood DDX7019 Service Manual

DDX7019/7029/7029Y/7039/8019/8029/8029Y/8039
DNX7100/710EX/7200
Ref. No. Application / Function
Q23,24 Emitter follower
Q25,26 SW
Q31~Q34 8V regulator control
Q35 8V regulator
Q36~Q38 8V regulator control
Q43 9V regulator
Q44~Q46 9V regulator control
Q101 SW
Q103,106,
SW
Q108,111
Q104 SW
Q105 SW
Q109 SW
Q110 SW
Q201 SW
Q203 SW
Q204,205 SW
Q206,207 SW
Q301 Buffer
Q306 Buffer
Q307 Buffer
Q308 Buffer
Q401 Buffer
Q501 SW
Q502 Buffer
Q504 Buffer
Q505 SW
Q506 MUTE
Q507 MUTE
Q508 Buffer
Q509 SW
Q600,601 SW
Q602 Buffer
Q604,605 SW
● VIDEO UNIT (X35-4840-10/4920-10)
Ref. No. Application / Function
IC1 Inverter control IC
IC100 DC/DC converter IC
IC102 Mono-multi
IC103 NOT
6
COMPONENTS DESCRIPTION
Analogue power supply reference circuit
T_P3.3V switch
DVD A8V regulator
A8V regulator
A8V regulator
LED9V regulator
LED9V regulator
DC-DC output voltage switching
DC-DC protection control
DC-DC SW FET (5V or 7.5V)
DC-DC SW FET (5V)
DC-DC SW FET (3.3V)
DC-DC SW FET (5V)
µ-com reset SW

KEY RESET

SI
LED SW
Composite signal
RGB Signal_R
RGB Signal_G
RGB Signal_B
Graphic SYNC
KEY RESET
ACC_DET/KEY RESET delay
SPDIF signal
ACC_DET/KEY RESET delay
DVD MUTE (Lch)
DVD MUTE (Rch)
Remote control signal
DVD MUTE control
Disc slot LED control
SYNC buffer
NTSC/PAL detection SW
Control and drive of the inverter circuit for the back light
+12.5V power supply for VCOM amplifi er and -12.0V/+18.5V power supply for LCD
Delay 5V power supply for DC/DC IC
Reverse
Operation / Condition / Compatibility
Operation / Condition / Compatibility